With up to 179 oz of torque, this brushless micro servo packs one heck of a punch. It's smart too, which allows you to program this servo for either standard servo or winch duty with our optional programmer. SPECIFICATIONS: High Torque High Speed BRUSHLESS Servo / Winch FULLY PROGRAMMABLE Magnetic Angle Sensor Pulse Width Modulation Control REEFS LINK required for Programming (Optional) Comes as Servo Voltage 6-8.4 / Internal: Metal & Steel Gears CNC Aluminum Casing / Bearing Type: 2BB Temp Rate: -15C°~ +70C Weight: .74oz / 21g Dimension: (LWH) .90 x .47 x 1.08 in 23 x 12 x 27.5 mm Torque: 135 oz (9.7kg)@ 6.0v 159 oz (11.4kg)@ 7.4v 179 oz (12.9kg)@ 8.4v Speed: .09 sec @ 6.0v .07 sec @ 7.4v .06 sec @ 8.4v Spline: 25T Micro Dead Band Width: 2μs Unload Current: 150mA @ 4.8V 180mA @ 6.0V 240mA @ 7.4V 300mA @ 8.4V Load Current: 1900mA @ 4.8V 2200mA @ 6.0V 2600mA @ 7.4V 3000mA @ 8.4V For programming, the USB Link is required. Item# REEFS129 WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.